CN1808028A - Application of microwave technology in tobacco leaf drying treatment - Google Patents

Abstract

The invention relates to a application of microwave technique in the tobacco leaf drying area, belonging to the sample pretreatment technique of tobacco leaf analyze detection. The invention utilizes the quick ice-out function of family microwave oven, and via the fire control in sequent decrease and the time setting to realize the application of microwave technique in the tobacco leaf drying treatment. The invention has the advantages that: it is simple and quick while the speed is improved hundreds than traditional methods. The invention can supply a effective sample pretreatment method for realizing accurate on-site quick detection on the tobacco leaf sample.

Description

The application of microwave technology in drying tobacco is processed

Technical field:

The present invention relates to the application of a kind of microwave technology in drying tobacco is processed, belong to Sample Pretreatment Technique field in the tobacco leaf analytical test.

Background technology:

In numerous quality of tobacco analysis test methods, comprise traditional chemical method, such as triumphant formula nitriding etc., also comprise modern physical method, such as the near-infrared rapid analysis method etc., generally all require analytic sample is carried out drying and processing, to eliminate the sample moisture difference to the impact of analysis result, therefore the sample drying technology is a very important key link in analytical test, directly impact analysis result and analysis efficiency.

So far, the test sample analysis in the field of tobacco, tobacco samples were dried using traditional baking methods Box drying method. Although this method can better exclude moisture interference effect on the analysis results, but requires the sample Drying temperature is not too high, for example, requirements for tobacco samples 40 ℃ ~ 60 ℃, if the temperature is too high will cause the Denatured sample; therefore tobacco sample at the temperature range of water required is substantially complete drying time is very long, Under normal circumstances takes 24 hours. Therefore, the sample drying technology and methods can not meet some quick analysis and testing Needs, such as tobacco acquisition of on-site rapid analysis and testing.

The literature search, no tobacco drying process used in the present invention drying method with the same open literature Reported.

SUMMARY OF THE INVENTION:

The object of the present invention, the substance of the application of microwave theory and techniques to achieve rapid sample tobacco Drying, test and analysis of samples for the tobacco offers a fast, simple and convenient means of sample pre-treatment, a large Amplitude to increase sample testing speed.

The present invention utilizes a common household microwave oven for drying tobacco samples studied, a large number of research experiments Data indicate that microwave role in tobacco samples suitable conditions, tobacco samples and dry better treatment measures Dry situation and the effects are as follows:

1, the microwave power control options

Microwave power through the experimental data show that the size of the order of decreasing use of control methods, namely, starting with high firepower To medium to low firepower firepower finally descending order not to be able to make both fast drying paste the tobacco moisture variability Drying, using ordinary household microwave oven for drying when using the "Quick Thaw" feature stall implementation.

2, the placement of tobacco samples

For a complete or incomplete flake tobacco samples can be torn into small pieces after folding into a microwave The furnace, the number of overlapping tobacco sheet of not more than 5; comminuted tobacco sample to the sample tile in accordance with Microwave container placed manner, or to tile on a white piece of paper and then into the microwave container, The maximum thickness of the sample tile not to exceed 1cm. Depending on the amount of microwave dried sample container size.

3, the choice of microwave drying time control

2 satisfy the conditions in the control mode, the sheet-like tobacco microwave drying time control samples 3 minutes; the comminuted tobacco control sample of microwave drying time of 5 minutes.

4, microwave drying effect analysis

4, microwave drying effect analysis...

4, microwave drying effect analysis...

Specific embodiments:

Example 1:

Using ordinary household 750W microwave oven, will take a whole slice of tobacco leaf midrib and stems removed, and the remaining tobacco Torn into small pieces after microwave container, microwave select "quick thaw" position, set the processing operation Operating conditions are: fire for 1 minute at 100%, 60% fire for 1 min, 20% fire Processing 1 minute, 3 minutes after the sample was removed after the drying process for 10 seconds still, to be completed in a conventional heat The additional processing or analysis methods.

Example 2:

Using ordinary household 750W microwave oven, the powder tobacco sample tile microwave container, tile thickness Of 8mm, select the microwave oven "quick thaw" position setting process operating conditions: 100% fire For 1 min, 80% fire for 1 min, 60% fire for 1 minute at 40% fire Li 1 minute, 20% fire for 1 minute, dried for 5 minutes 10 seconds, remove the sample still Minutes for the cooling after the other according to a conventional method for processing or analysis.

Data Comparison Sheet

Sample Code Number	Microwaves No treatment	Total sugar (%)	Sugar (%)	Two sugar difference (%)	Total Nitrogen (%)	Nicotine (%)	Protein (%)	Shmuck Value	Sugar to nicotine ratio	Nitrogen base ratio	K(％)	Remark
													05Y3200	Has bake	26.44	25.06	1.37	2.11	4.38	8.47	3.12	6.04	0.48	1.70	The same series Number is the same The same products. Error Provisions Error analysis Deviations of the
05Y3200	No bake	26.84	25.35	1.50	2.14	4.42	8.60	3.12	6.07	0.48	1.75
												05Y3179	Has bake	31.00	29.55	1.46	1.79	2.61	8.34	3.72	11.88	0.68	1.23
05Y3179	No bake	30.65	29.27	1.38	1.86	2.83	8.54	3.59	10.83	0.66	1.18
												05Y3218	Has bake	36.59	35.76	0.83	1.37	1.93	6.48	5.65	18.96	0.71	1.42
05Y3218	No bake	37.29	35.25	2.03	1.39	1.97	6.54	5.71	18.97	0.70	1.34
												05Y3270	Has bake	33.45	30.49	2.96	1.38	0.94	7.58	4.41	35.77	1.47	1.85
05Y3270	No bake	31.89	29.21	2.67	1.52	1.05	8.37	3.81	30.51	1.45	1.84
												05Y3270	No bake	36.71	35.11	1.60	1.51	2.29	6.97	5.27	16.03	0.66	1.77
05Y3216	Has bake	37.76	35.06	2.70	1.49	2.23	6.87	5.50	16.92	0.67	1.72
												05Y3179	Has been baking powder Sample	30.36	28.58	1.78	1.71	2.61	7.88	3.85	11.65	0.66	1.15
05Y3218	Has been baking powder Sample	35.88	34.53	1.35	1.27	1.96	5.82	6.17	18.27	0.65	1.30

Table does not bake means using the national standard methods using oven dried samples.

Claims (1)

1, A microwave drying technology in the tobacco processing applications, characterized as a commercially available household microwave The rapid thawing function stalls furnace by order of decreasing fire control and time setting, the microwave technology Tobacco drying technique in processing applications.